About Heuristica Discovery Counsel LLP

Heuristica Discovery Counsel LLP is a Toronto law firm that focuses entirely on electronic discovery and evidence management, rather than general civil litigation. Chambers and Partners places its founding in 2015 and describes it as Canada's only national law firm dedicated solely to eDiscovery. The name comes from the Greek word heuriskein, meaning to discover. The firm has a second office in Calgary, and its eight lawyers act as counsel to other law firms, corporations and governments across the country on the electronic evidence side of litigation, arbitrations, regulatory proceedings and investigations.

Heuristica's services span legal data intelligence, document review, discovery ADR, technical eDiscovery and managed services. Chambers and Partners ranks the firm nationally in its eDiscovery guide, and its founder holds an individual Band 1 ranking there. The team also includes senior counsel with engineering and technology training alongside its lawyers, and it doesn't rely on lawyers alone: a separate technology group and a legal review team support the document review side of the practice.

Milestones & recognition

  • Crystal O'Donnell founded Heuristica Discovery Counsel in 2015. Chambers and Partners describes it as Canada's only national law firm dedicated solely to eDiscovery.
  • Chambers and Partners ranks Heuristica in its national eDiscovery guide, with founder Crystal O'Donnell individually ranked in Band 1.
  • Heuristica received three nominations for the Canadian Lawyer Readers' Choice Awards, in the eDiscovery, litigation support and document review categories.

In the community

  • Heuristica sponsored the Association of Women Lawyers golf tournament in Calgary, tied to its Alberta office.
  • Senior Counsel Candice Chan-Glasgow took part as a panelist in an AI and IP Law webinar series on IP litigation in the AI era.
  • Heuristica publishes commentary on eDiscovery law developments, including an analysis of a Federal Court decision involving 26,000 privilege claims in Commissioner of Competition v. Canadian Real Estate Association.

Good to know

A person using a wheelchairWheelchair accessible

This firm’s lawyers at a glance

Called to the bar
1985–2019 · median 27 years in practice 8 of 8 lawyers
Law schools
Queen's University (3), University of Toronto (3), McGill University, University of Western Ontario 8 of 8 lawyers

Offices 2

121 King St. West, Suite 1820, Toronto, ON M5H 3T9

555 4th Ave. S.W. Suite 1620, Calgary, Alberta T2P 3E7

The neighbourhood

Heuristica is headquartered in Toronto, with its main office on King Street West in the downtown core. A second office on 4th Avenue S.W. in downtown Calgary gives the firm a physical presence in Alberta, where it has sponsored local events such as the Association of Women Lawyers golf tournament.

Frequently asked questions

What kind of legal work does Heuristica Discovery Counsel do?
Heuristica practises only in electronic discovery and evidence management. It doesn't run a general litigation practice; instead its lawyers provide legal and technical support to other counsel working through electronic evidence in litigation, arbitrations, regulatory proceedings and investigations.
Does Heuristica represent individual clients, or does it work with other law firms?
Heuristica works as counsel to other law firms, corporations and governments rather than taking on individual clients directly. Its practice is built around supporting the litigation teams that need to manage large volumes of electronic evidence.
Where are Heuristica's offices?
Heuristica is based in Toronto, at 121 King St. West, with a second office in Calgary at 555 4th Ave. S.W.
How large is the Heuristica team?
The firm's people page lists eight lawyers, including partners, senior counsel and associates, along with a technology team and a legal review team that supports document review work.
What does the name Heuristica mean, and when was the firm founded?
The name comes from the Greek word heuriskein, meaning to discover, which reflects the firm's focus on eDiscovery. Chambers and Partners places its founding in 2015.
Has Heuristica been recognized for its eDiscovery work?
Chambers and Partners ranks Heuristica nationally in its eDiscovery guide, and the firm's founder holds an individual Band 1 ranking there. Heuristica has also been nominated for Canadian Lawyer Readers' Choice Awards in the eDiscovery, litigation support and document review categories.

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Listing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗